/*
 * FindBugs - Find Bugs in Java programs
 * Copyright (C) 2003-2008 University of Maryland
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs.gui2;

import java.util.concurrent.CopyOnWriteArrayList;

import edu.umd.cs.findbugs.BugInstance;

/**
 * Display decider which takes account of the state of filtering issues across the application (i.e.
 * from the filter preferences menu).
 * 
 * @author Graham Allan (grallan@cis.strath.ac.uk)
 */
public class ApplicationDisplayIssueDecider implements DisplayIssueDecider {

	private final IApplicationState applicationState;
	private final CopyOnWriteArrayList<DisplayIssueDecider> chainedDeciders = new CopyOnWriteArrayList<DisplayIssueDecider>();

	public ApplicationDisplayIssueDecider(IApplicationState applicationState) {
		this.applicationState = applicationState;
	}

	public boolean shouldDisplayIssue(BugInstance b) {
		boolean shouldDisplay = applicationState.shouldDisplayIssue(b);
		for (DisplayIssueDecider decider : chainedDeciders) {
			shouldDisplay &= decider.shouldDisplayIssue(b);
		}

		return shouldDisplay;
	}

	public ApplicationDisplayIssueDecider chainDecider(DisplayIssueDecider toAdd) {
		chainedDeciders.add(toAdd);
		return this;
	}

	public ApplicationDisplayIssueDecider cloneWithNoChainedDeciders() {
		return new ApplicationDisplayIssueDecider(applicationState);
	}

}
